Original Post

A unicorn inventor?

Invent a portable $400-cheap 2 kilowatts continuous power source lasting one year without recharge. (It's an equivalent of 1.5 million fully charged iPhone 11 Pro Li-Ion batteries)

You can bump up the price, if you can invent something more expensive, but still portable and providing 2 kW of electric energy.

If you do that, the world will switch to electric cars.

If you won't, we have to spend 55 years worth of the 2020 transportation budget ($180T) to convert all gasoline- and Diesel-fuel-powered cars and semi-trucks into Li-Ion battery powered, recharged using photovoltaic (PV) solar panels installed in each small town (1 square mile) to large cities (16 square miles).

The alternative to find THAT MUCH money for Li-Ion PV solar "economy" is ridiculous and not feasible.

We MUST THINK REALLY HARD RIGHT NOW, IMMEDIATELY, to invent a portable 2 kilowatts power source. 80 of such sources must fit into an average size 200 hp truck. So be careful with the size too.

Fusion? Nuclear?

WE DO NOT EVEN HAVE THEORETICAL OPTIONS for the most important problem the humanity HAS TO solve RIGHT NOW!

We thought nuclear and fusion were jokes, or research projects, but NOBODY still can clearly tell you if these can, even in THEORY, replace gasoline and Diesel fuel.